Dragon Catcher, a mod by GreyD, was one of the best mods of it's time. It was an amazing mod that was so simple, yet so complex. This mod allowed you to explore a world full of cute, tamable, ride able dragons.
I would give nearly anything to have some kind fellow take this mod up as a challenge to revive it! (I'm sure a lot of the community would too)
This mod introduced one dragon entity that, depending on the area, would spawn a certain type of dragon (only real difference is texture). These dragons were tamable, rid able, nameable, and level able. It also introduced Three types of translucent crystals, Iron Pyrite ore, Enchanted bottles used to store your dragons, and a separate hostile dragon that spawns at night (still tamable).
I, myself, am a modeler for Divine RPG. So all that is needed is a dedicated coder who'd be willing to set aside some time!
Whether you feel like updating would be easier, or re-writing it from scratch, I already have a similar dragon model made. PM me if you need my Skype name.
EDIT: If you're willing to help, master801 generously updated it from 1.4.7 to 1.5.2!
Whomever PM's me with willingness to help will receive the current source code.
Our goal is 1.7.2!
The only bug I can find is that they go into "sit" mode whenever they are tamed, making it impossible to move them. They are only supposed to go to sit mode when given a deep gem, and another click with a deep gem is supposed to get them out of sit mode. In this case, taming them with anything forces them into this mode, which they cant get out of.